Column base connections under compression and biaxial moments : proposed design approach

dc.contributor.authorCloete, R.
dc.contributor.authorRoth, C.P. (Chris)
dc.contributor.emailchris.roth@up.ac.zaen_US
dc.date.accessioned2022-10-27T12:39:54Z
dc.date.issued2021-09
dc.description.abstractVery little guidance exists on the design of steel column base connections subjected to axial compression and biaxial bending. A new mechanical model is proposed here for designing such base connections. The model constructs the thrust-moment interaction curve of the connection, which can then be used for design. The method is aimed at unstiffened baseplates with four corner bolts, but may readily be extended to other layouts. The model makes several simplifying assumptions that reduces the problem to 3 modes of failure that employ simple geometric expressions and statics to calculate bolt and prying forces. Contrary to the Eurocode and AISC approach, the proposed model utilises the full plastic capacity of the plate under all loading conditions and on both the tension and compression sides of the connection. The resulting interaction curves were compared to experimental results from an experimental program of thirty-two tests to failure. The model predicts behaviour fairly accurately. It was also shown that the use of a linear moment interaction action equation is a conservative approach to designing base connections for axial force and biaxial bending.en_US
dc.description.departmentCivil Engineeringen_US
dc.description.embargo2023-06-24
dc.description.librarianhj2022en_US
dc.description.urihttps://www.sciencedirect.com/journal/journal-of-constructional-steel-researchen_US
dc.identifier.citationCloete, R. & Roth, C.P. 2021, 'Column base connections under compression and biaxial moments : proposed design approach', Journal of Constructional Steel Research, vol. 184, art. 106814, pp. 1-12, doi : 10.1016/j.jcsr.2021.106814.en_US
dc.identifier.issn0143-974X (print)
dc.identifier.issn1873-5983 (online)
dc.identifier.other10.1016/j.jcsr.2021.106814
dc.identifier.urihttps://repository.up.ac.za/handle/2263/88015
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2021 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Constructional Steel Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Journal of Constructional Steel Research, vol. 184, art. 106814, pp. 1-12, 2021. doi : 10.1016/j.jcsr.2021.106814.en_US
dc.subjectColumn baseplateen_US
dc.subjectBiaxial bendingen_US
dc.subjectDesign approachen_US
dc.subjectT-stuben_US
dc.titleColumn base connections under compression and biaxial moments : proposed design approachen_US
dc.typePostprint Articleen_US

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